Posey is a mutant vampire potato who was meant to be a mutant flower instead and was grown by Bushroot to become his life partner. Although surprisingly tolerant of him, Posey had her own plans and escaped his greenhouse to terrorize the countryside. Posey's vampiric traits make her seek out people and attack them, the result of which isn't their death but their enthrallment into chips-eating couch potatoes. She is also capable of growing out her roots to use as prehensile extensions would a victim make a run for it. Her rampage ended when she was de-mutated thanks to an anti-vampire potato ritual talked about in the countryside folklore.

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